You may find this link to Online safety advice for parents from NSPCC useful.

Their advice is to use a simple 4 step approach called TEAM:

• Talk about staying safe online
• Explore their online world together
• Agree rules about what is OK and what is not OK
• Manage your family's settings and controls

There is a lot of other very helpful advice and a guide to various Apps used frequently by children and young adults. Just follow the link below.

NSPCC Webpage